Final answer:
The probability of selecting a student at random and having them belong to either the Management or Human Resources department is 0.7.
Step-by-step explanation:
To find the probability of selecting a student at random and having them belong to either the Management or Human Resources department, we need to know the number of students in those departments and the total number of students. Let's assume that there are 100 students in total, with 40 in Management and 30 in Human Resources. The probability of selecting a student from Management would be 40/100 = 0.4, and the probability of selecting a student from Human Resources would be 30/100 = 0.3. To find the probability of selecting a student from either department, we add these probabilities together: 0.4 + 0.3 = 0.7. Therefore, the probability of selecting a student at random and having them belong to either the Management or Human Resources department is 0.7.